Plate-mill.



' J. M. PERRY.

I PLATE MILL. APPLICATION FILI-:D APII. 1913.

L l 5 953 Patented Nov. 9, 1915.

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TTOHNEY 1'. M. PERRY.

PLATE MILL.`

APPLICATION FILED APR. 5. 1913. 1.159,53 L. Patented. Nov. 9, 1915.

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T0 all wim/m, t may concern.'

Be it known that l, JAMns lll. Panni?, a

citizen of the United States, residing at Sharon, in the county of Mercer and State of Pennsylvania, have invented certain new and useful Improvements in Flatell'lills, of which the following is a specification..

My invention pertains to rolls forv use 1n rolling mills and is directed to a three 'high plate mill. L

The particular objects sought to be accomplished in the present invention embody all those embraced within the application previously filed by myself @ctober 28,1912, Serial No. 728,319, for an improvement in finishing rolls, with the addition, however,

of certain valuable improvements by which my mill may be used for double passing, that is, permitting or plate to be rdlled through the mill in As in the previous application, l utilize the advantages of a small knife roll and prevent thebreaking of this small knife roll by having a tread roll to take the back thrust and prevent ,the knife roll from springing away from the plate. in the present case, during one pass the upper roll takes up the up and back thrust of the knife roll, while in the reverse /passthe lower roll takes up the down and back thrust of the knife roll.

ln order to accomplish the foregoing, it is necessary that the knife roll have its center position forward take up the thrust from the knife roll, and the present invention contemplates such a combination of elements, arrangements of parts and specific structural details as will permit of the knife roll being thrown forward relatively to one roll and then forward relatively to the other roll.

ln the drawings -in which is shown a preferred arrangement of the rolls in accordance with my lnvention, Figure il is a side elevation of the roll housing showing the rolls therein. Fig. lll is a cross sectional view of the structure shown in Fig. l taken on a line passing through the top of the cam member l0, 10 for the' purpose of showing the arrangement of the knife roll shift. Fig. llll is a front elevation of the rolls as shown in Fig. l. Fig. lV illustrates the arrangement of the rolls when the knife roll has been shifted for a pass between it and the Fi V discloses the saine arrangementK as s own in Fig. lV with the specincaetii te tetten; raient.

Application tiled April o, mit.

the passing of the sheet 'i of the roll which is tor Patented Nov. il?, item5, sensi no. real/ie.

knife roll, however, shifted for a pass between it and the upper roll.

Referring now to the several .gures in which like reference characters designate lilreparts, (l) represents the housin (2) the iournal bearing for the lmiife roll; (3) thel bearing for the lower roll; (ll) the rider and Ll the bearing for the upper roll. Suitable clamps epassing through the rider hold the upper roll to itsv bearing. The lower, knife and l by the letters A, B and C respectively.- ltolls A and C, which are of equal diameter, are provided with the usual wabblers which by means of boxing, not shown, are corunected to the source of power.

(9) represents the plate upon which the rolls act. .i

At each side of the journal bearing (2) of the knife roll B, l provide a pair of cams (l0, lO) which are adapted4 to partially rotate in the cam seats (11,11). These cams are provided at their upper ends with paraln lel extensions (12;l2). 'lhe extensions (l2) are connected by the cross piece (13) while the extensions (lQ) are similarly connected, so that the rotation of either of the cams (l0) or (10') adords a corresponding rotation of the other cam. Extending outwardly from the top of the outer cam (l0) .and (10') are the arms (le). 'lhese arms at their outer ends are connected by the member (l5) at the central portion of which is provided a suitable han le.

As shownv more clearly in Figs. l and ll, when the member (l5) is drawn toward the right, the cams rotate in a contra-clock wise direction so that the bearing (2) is forced to the right and its right end abuts against the portion l of the housing. ln this position the center of the roll B is in line with the center of the roll A, as shown by the dotted line Y-Y The rolls are now .in aposition for-passing the plate between the knife and the lower roll as shown in Fig. IV, in which pass theback and upward thrust of the knife roll B is taken up and opposed by the upper roll C. By reversing the member (l5), the cams are ro tated in a clockwise direction and the journal bearing v(2) of the roll B moves to the left, in which position the line X-X, which passes through the center of the roll C, also passes through the center of the roll B. The rolls are now put in the position as shown in Fig. V, and so positioned are ready to reupper rolls are represented lll@ iic

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understood that when the knife roll B is' shifted, the upper roll C may be raised by such screws. p

I have set forth in my prior application the fundamental purpose `of employing a small knife roll to obtain a reduction of the plate or sheet to be rolled by means of a small bite, and at the same time by having a relatively large roll on vthe side of the knife roll opposite to that through which the plate passes, to prevent the small knife roll from breaking, or at least from springing away at the center from the piece, thus giving an uneven gage. As will be readily seen, in the present construction, I have adapted this principle -to a two pass mill so that all the advantages sought to be obtained in my prior application, which is. directed to a finishing mill, can be obtained in a plate Irrelevant structure and matters of detail, which may be changed to suit the particular conditions under which the mill is to be operated, have been omitted.

I claim- 1. In a plate mill, an upper roll and a lower roll having equal diameters, an' intermediate roll of smaller diameter and means for shifting the small roll horizontally relative tothe larger rolls.

2. In a plate mill, an upper roll and a lower roll, the'aXis of one of said rolls being forward of the other, aninterrnediate roll and means for shifting said roll to a position in line-with either the upper or lower roll.

In this' 3. AIn a three high mill having the upper I and -lower rolls out of alinement, an intermediate roll adapted to be shifted into alinement with either roll.

4. In a three high mill, the combination of-a housing, an upper and lower roll there-v '1n, one of-said rolls being4 oi'set relative to rolls.

'5. A plate mill having three rolls, vthe upper roll being offset relative to the lower roll, a horizontally shiftable intermediate roll, and means for shifting said roll into alinement with either of the other rolls, for the purpose of procuring a pair of' reducing rolls in the two rolls so alined, the intermediate roll being at all.times in contact with the roll with which it is unalined. l

6. In a three high mill, two rolls having laterally immovable bearings and the thirdI roll having laterally shiftable bearings.

7. In a plate mill, the combination of an upper and lower roll having laterally immovable bearings and an intermediate roll having laterally shiftable bearings.

8. In a plate mill, an upper and lower roll mounted in laterally immovable bearings, said rolls being parallel lout offset vertically as to each other' and an intermediate roll mounted for lateral movement into vertical alililiement 'alternately with the other two ro s. Y

9. In a three high mill, the combination of an upper' and a lower'roll with a middle roll, the distance 'between the upper and lower rolls, taken from the adjacent portions of said rolls, being normally less than the diameter of the intermediate roll..

In testimony whereof I ailiX my signature in presence of two witnesses.

JAMES M. PERRY. Witnesses:

EUGENE E. ANDERSON, FRED T. FRUIT. 

